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PODifficulty parsing JSON into HTML, results undefined?
 

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  1. PODifficulty parsing JSON into HTML, results undefined?
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    <p>I'm trying to parse YAHOO data using getJSON and YQL</p> <p>The connection works well, I retrieve data which I can see and log to console, but I cannot then get the data to print into the JSP page I'm using. I've used the answer accepted here: </p> <p><a href="http://jsbin.com/umuri5/1/edit" rel="nofollow">http://jsbin.com/umuri5/1/edit</a></p> <p>with little success. Here is my JSP: </p> <pre><code>&lt;%@page import="p.build.classes.p.*"%&gt; &lt;!DOCTYPE JSP&gt; &lt;html lang="en"&gt; &lt;head&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8"&gt; &lt;title&gt;untitled&lt;/title&gt; &lt;style type="text/css"&gt; body { text-align: center; } &lt;/style&gt; &lt;/head&gt; &lt;body onLoad="gova();"&gt; &lt;div id="container"&gt; &lt;/div&gt; &lt;table id="userdata" border="1"&gt; &lt;thead&gt; &lt;th&gt;Change&lt;/th&gt; &lt;/thead&gt; &lt;tbody&gt;&lt;/tbody&gt; &lt;/table&gt; &lt;script id="userTemplate" type="text/x-jquery-tmpl"&gt; &lt;tr&gt; &lt;td&gt;${Change}&lt;/td&gt; &lt;/tr&gt; &lt;/script&gt; &lt;script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js" type="text/javascript" charset="utf-8"&gt;&lt;/script&gt; &lt;script src="https://raw.github.com/jquery/jquery-tmpl/master/jquery.tmpl.min.js" type="text/javascript" charset="utf-8"&gt;&lt;/script&gt; &lt;script src="scripts/script.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; function gova() { requestCrossDomainJSON( 'yahoo.finance.quote', function(results) { var i, t = $('#userTemplate'), tbody = $('#userdata tbody'); // console.log(data.query.results); for (var i = 0; i &lt; results.userdata.length; i++) { t.tmpl(results.userdata[i]).appendTo(tbody); } } ); return false; } &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>and here is my script, script.js:</p> <pre><code>function requestCrossDomainJSON( site, callback ) { if ( !site ) { alert('No site was passed.'); return false; } var yql = 'http://query.yahooapis.com/v1/public/yql?q=select%20Change%20from%20' + site + '%20where%20symbol%20in%20(%22YHOO%22)&amp;format=json&amp;diagnostics=true&amp;env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&amp;callback=?'; // Request that YSQL string, and run a callback function. // Pass a defined function to prevent cache-busting. function cbfunc(data) { console.log(data); // If we have something to work with... if ( ! data.error &amp;&amp; data.query.results) { // If the user passed a callback, and it // is a function, call it, and send through the data var. if ( typeof callback === 'function') { callback(data.query.results.json); } } // Else, Maybe we requested a site that doesn't exist, and nothing returned. else throw new Error('Nothing returned from getJSON.'); } // Request that YQL string, and run a callback function. // Pass a defined function to prevent cache-busting. $.getJSON( yql, cbfunc ); // console.log(data.query.results); }; </code></pre> <p>The error occurs at the line:</p> <pre><code> for (var i = 0; i &lt; results.userdata.length; i++) { t.tmpl(results.userdata[i]).appendTo(tbody); } </code></pre> <p>where the console says it cannot read property userdata of undefined. Because JQuery template is depreciated, should I be using a better method to get this data into my page?If this is still a valid solution to the problem I am having, how should I reference results from the called JSON if it is undefined in the function provided. I've tried using an HTML file in lieu of a JSP as well.</p> <p>Thank you in advance.</p>
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